Update 'README.md'

README.md

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-# 20-Coding-Patterns-DesignGurus.org
+# 20 Coding Patterns by DesignGurus.org
 
-20 DSA Coding Patterns from https://levelup.gitconnected.com/dont-just-leetcode-follow-the-coding-patterns-instead-4beb6a197fdb
+20 DSA Coding Patterns from https://levelup.gitconnected.com/dont-just-leetcode-follow-the-coding-patterns-instead-4beb6a197fdb
+
+Coding Patterns:
+1. Sliding Window
+2. Islands (Matrix Traversal)
+3. Two Pointers
+4. Fast & Slow Pointers
+5. Merge Intervals
+6. Cyclic Sort
+7. In-place Reversal of a LinkedList
+8. Tree Breadth-First Search
+9. Tree Depth First Search
+10. Two Heaps
+11. Subsets
+12. Modified Binary Search
+13. Bitwise XOR
+14. Top ‘K’ Elements
+15. K-way Merge
+16. Topological Sort
+17. 0/1 Knapsack
+18. Fibonacci Numbers
+19. Palindromic Subsequence
+20. Longest Common Substring